1. j + 15 is a(n) _____ expression, because __________.

A. numerical expression; it consists of only numbers.
B. numerical expression; it consists of operation sysmbols
C. algebra expression; it consists of numbers and a variable
D. algebra expression; it has more than one operation symbol

2. Chris earns $10.00 each time he washes his neighbor's car. What is the variable in this situation?
A. no variable
B. the number of times the neighbor drives the car
C. the amount of money Chris earns per wash
D. the number of times. Chris washes the car

Use the following values to evaluate the expression.
w = 5, x = 9, y =2
3. x + 20 - 1
A. 28
B. 19
C. 30
D. 32

(I don't feel like writing the rest of the questions but please help. I rlly need help on this. TwT)

Sorry if It's too late to answer but

A1: algebraic expression; it consists of numbers variable
A2: the number of times Chris washes the car
A3: 28
A4: 85
A5: 23.9

1. C. algebra expression; it consists of numbers and a variable. The expression "j + 15" includes a variable "j" and a number "15", making it an algebraic expression.

2. C. the amount of money Chris earns per wash. In this situation, the variable is the amount of money Chris earns for each car wash, which is $10.00.

3. x + 20 - 1 = 9 + 20 - 1 = 29 - 1 = 28. The value of the expression when the variables are substituted is 28, so the correct answer is A. 28.

1. The answer is C. algebraic expression; it consists of numbers and a variable. In the expression j + 15, 'j' represents a variable, which can take on different values. The expression includes both numbers (15) and a variable.

2. The variable in this situation is D. the number of times Chris washes the car. This is because the amount of money Chris earns depends on the number of times he washes the car. It is the variable that can vary in the situation.

3. To evaluate the expression x + 20 - 1 using the given values w = 5, x = 9, and y = 2, substitute x = 9 into the expression:
9 + 20 - 1 = 29 - 1 = 28
Therefore, the answer is A. 28. Substitute the given value of x into the expression, then perform the addition and subtraction operations to get the final result.

#3. x+20-1 = 9+20-1 = ___

now, how about you do some of the work?