Answer:

Step-by-step explanation:
11 is the amount per hour, x stands for the number of hours, and he needs to earn at least 90 dollars.
Answer:
1/2
Step-by-step explanation:
Answer:
b≤-23
Step-by-step explanation:
72≥b+95 Move terms
-b≥95-72 subtract
-b≥23
Answer:
Comic Books
a: y=-10x+90
b: He will have 10 books at the end of the seventh day.
Step-by-step explanation:
A: Take two points. The y-intercept is (0,90). The graph decreases by 10 each day.
B: Look at day 8.
A variable is a letter, for example x, y or z, that represents an unspecified number.
6 + x = 12
To evaluate an algebraic expression, you have to substitute a number for each variable and perform the arithmetic operations. In the example above, the variable x is equal to 6 since 6 + 6 = 12.