Mary needs a 90% on her final exam to get an a for the quarter. The exam has 75 questions how many questions does Mary need to answer correctly in order for her to get an A

68 questions

Step-by-step explanation:

Given Data:

Exam questions = 75

Percentage needed by Mary for the quarter = 90%

therefore:

Total number of questions she needs to answer to get an A

= exam questions x percentage needed /100

= 75 * 90 / 100

= 6570 / 100

= 67.5

Approximately Mary needs to answer 68 questions correctly to score an A for the quarter

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.

take it another