Answer:
Step-by-step explanation:
d=days not used
50-2d = 40-1.5d
subract 40 each side
10-2d =1.5d
10= 0.5d
20=d
After 20 days the value of the gift cards will be equal.
20*2=40 50-40=10 ($10)
20*1.5=30 40-30=10 ($10)
each card will have a value of $10 after 20 days,when both cards have equal value
Answer:
a. 5
Step-by-step explanation:
3x2t = 6t+15 = 5t+20
-5t -5t
t+15 = 20
-15 -15
t = 5
Answer:
x = -4/17
Step-by-step explanation:
Answer:
x=2; 7
Step-by-step explanation: