Answer:
She’s 18
Step by step explanation:
18+13=31
Answer:
the blank number is 23
Step-by-step explanation:
8, 15, 27, x, 20
common ratio, r= T2÷ T1= T3÷ T2
= 15 ÷ 8 =27÷ 15
= 1.8 = 1.8
20 ÷ x = x ÷ 27
( cross multiply,)
x²= 540
x =√540
x = 23.24
x = 23
Answer:
see explanation
Step-by-step explanation:
A
note from the table that the cost increases by $15 for each package, then this is the multiplier for the cost.
let n be the number of packages , then
cost = 15n
B
to find the cost of 7 packages , substitute n = 7 into the rule
cost = 15 × 7 = $105
