5 + 4a = 45
what does a equal

a = 10

Hope this helps :)

a=10

Step-by-step explanation:

5+4a=45

take 5 from each side

4a=40

divide both sides by 4

a=10

what golf ball

step-by-step explanation:

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2