Marcus earns $40 per day plus $7 for every sale he makes. On Friday, he wants to earn at least $75. Which best describes the number of sales he needs to make to reach his goal? * A. At least 5 sales
B. At most 5 sales
C. At least 6 sales
D. At most 6 sales

A. At least 5 sales

Step-by-step explanation:

First off, we can get rid of two of the answers, reason being is that we need the equation to be greater then or equal to a number, which means that we don't need an "at most" answer.

This leaves us with two options; A. and C.

Then we solve the inequality; 40 + 7s 75.

40 + 7s 75

subtract 40 from each side

7s 35

divide each side by 7.

s 5

This means that he has to make at least 5 sales in order to reach his goal. Which is A.

in mathematics, a function is a relationship between two variables such that the value of one of the variables, called the dependent variable, is determined by the value of the other variable, called the independent variable. there is a specific term we use to describe the set of independent variables of a function.