Answer:
Step-by-step explanation:
Answer:
A)
Step-by-step explanation:
check that the formula in A works . . .
the 7th term should be 320
a(320) = 5(2)^7-1
= 5(2)^6
= 5(64)
= 320
Sam painted 3
ellie painted 2x3, so she painted 6
6+3=9
together they painted 9 pictures
Hey there!
First, let's multiply each side of the equation by 3 to get rid of the fraction
.
9 + 2x = 
Next we can multiply each side of the equation by 5 to get rid of the fraction
.
45 + 10x = 6
There's your answer!
Hope this helps!
Y = -10 and x = -13 (substitute 2y + 7 for x)