Given that D(x) = 2x, select ALL of the following that is true statements. D( x) is a rule for the set of points (5, 10), (6, 12) and (-2, -4).

D( x) is a direct variation. x is the dependent variable.

D(6) = 3

D( x) is a function.

Arianna is buying plants for her garden. she buys 15 flowering plants for $96. pink flowering plants sell for $8, and purple flowering plants sell for $5. how many pink flowering plants did arianna buy? i figured out the answer! the answer is 7. 8x +5y = 96 plug in 7 for x 8 (7) + 5y = 96 56 + 5y = 96 subtract 56 from both sides 5y/y = 40/5 y = 8 she bought 7 pink and 8 purple plants

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

How to find the exponential function y=ca^x, with points (1,2) and (2,1)