Answer:
C)-1
Step-by-step explanation:
You can not spend a negative hour playing golf.
You are buying 2 items so let's use two different variables to represent each:
p = number of tubes of paint
b = number of disposable brushes
cost = price per item × number of items
Equations from information given:
4p + 0.50b = 20 ← from the first 2 sentences
2p = b ← if there are twice as many brushes as paint tubes you need 2 times paint tubes to equal number of brushes
Solve the problem by using substitution... 1b equals 2p so replace b with that:
4p + 0.50(2p) = 20
4p + 1p = 20 ← 0.50 is half so half of 2p is 1p
5p = 20 ← combine like terms
p = 4 ← divide both sides of the equation by 5
Recall the equation 2p = b replace p with 4
2(4) = b
8 = b
ANSWER:
You purchased 4 tubes of paint and 8 disposable brushes.
Answer:
n = 135
Step-by-step explanation:
n = 3 × 45
n = 135
Y=0.72(3) i think tht is the answer
Answer:
Original cost = $16.40
Tax=9℅
Tip=20℅
Total cost is,
=16.40+ 16.40×9℅+ 16.40×20℅
=16.40 +16.40×9 /100+16.40×20 /100
= 16.40+1.476+3.28
=$21.156