The present cost
$22.20
Explanation:
Represent the cost of the present by the variable
c
We are told
XXX
3
5
×
c
=
$
13.32
(this is the requested equation)
Multiplying both sides by
5
3
(to get rid of the fraction on the right side)
XXX
5
3
×
3
5
×
c
=
$
13.32
$
4.44
×
5
3
XXX
→
c
=
$
22.20
Answer:
D
Step-by-step explanation:
6.8 = (6/5)^x
6.8 = 1.2^x
x ln 1.2 = ln 6.8
x = ln 6.8 / ln 1.2
= 10.513966
Answer:
22,912
You get this answer by multiplying both of the numbers.
x= number of boys in the club because it is unknown.
x + 7= the number total number of girls in the club.
