7. At a sports store, Curtis bought some
baseball card packs and some T-shirts.
The baseball card packs cost $3 each
and the T-shirts cost $8 each. If Curtis
spent $30, how many baseball card
packs and how many T-shirts did he
buy?
A. 4 packs and 2 T-Shirts
B. 4 packs and 3 T-Shirts
C. 2 packs and 2 T-Shirts
D. 2 packs and 3 T-Shirts

D

Step-by-step explanation: 3x8=24 t-shirts

3x2=6 packs

24+6=30$

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

$2416.6

step-by-step explanation:

per hour = $ 25

total work time = 35

commission = 15%

total she has to make = $ 4,500

let she sold x dollar products

so her commission will be 15 % of x

now

total = weekly basic pay + commission

4500= (25*35) + 15 % of x

4500=875 + * x

4500-875 =   * x

3625= * x

multiplying wwith 100 on both sides gives

36250 = 15 x

now

x =  

x= $2416.6