Lynn has 10 more pencils than Carol. Let p represent the number of pencils Carol has. Which expression shows how many pencils Lynn has? A. p + 10
B. p – 10
C. 2(p + 10)
D. 2(p – 10)

1/4 because there is 4 grades.

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x

the answer is a and d