In a class in which the final course grade depends entirely on the average of four equally weighted 100-point tests, Lisa has scored 87 , 86 , and 74 on the first three. What range of scores on the fourth test will give Lisa a C for the semester (an average between 70 and 79 , inclusive)? Assume that all test scores have a non-negative value. Write your answer in interval notation.

answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3

the ratio of balloons to tables is 5: 2 and the constant variation is 5.

the equation is y=5x