X+y=20 is it linear. and is it proportional

At the library by 9 books on a certain topic the librarian tells you that 55% of the books on this topic have been signed out how many books does the library have on the topic if 55% of the books have been signed out what percent of the books have

Jack spends 15% of his pocket money on sweets and 35% on magazines how much does he spend and save each week

What grade math uses quadratic functions?

What number represents the slope in y=-3x+1

Find 5 rational numbers between 3/5 and 4/5

The equation of the polynomial function is: f (x) = (x + (2 + i)) (x + (2 - i)) (x + 5) f (x) = (x - (2 + i)) (x - (2 - i)) (x - 5) f (x) = (x - (2 + i)) (x - (2 - i)) f (x) = (x + (2 + i)) (x - (2 - i)) (x - 5)

Andre owned a 1/4 acre lot. He wanted to construct a 120' x 80' tennis court on the lot. How many square feet will remain uncovered after he builds the tennis court?

Mary is paid 7.5% commission on all of her sales. She had sales of $2300 for the month of December. How much commission did Mary make?

What is the total weight in pounds of a 2.5 million blocks used to build the great pyramid and then convert that to ounces

The graph of the function y=f (x) find f (3)