<u>Answer:</u>
<u>Step-by-step explanation:</u>
-4x - 9y = -25
7(-4x - 9y = -25)
-28x - 63y = -175
<u>Now, let's substitute the value of y into the first equation.</u>
- => -7x - 2y = 25
- => -7x - 2(5) = 25
- => -7x - 10 = 25
- => -7x = 35
- => x = -5
<u>Now, let's check our answer to make sure our answer is correct.</u>
<u>Check:</u>
- -4x - 9y = -25
- => -4(-5) - 9(5) = -25
- => 20 - 45 = -25
- => -25 = -25
Hence, this is proved correct.
Hoped this helped.

Answer:
C
Step-by-step explanation:
To evaluate substitute x = 2 and y = 3 into the expression
- 3xy = - 3 × 2 × 3 = - 6 × 3 = - 18 → C
To find the percent decrease you do
final/initial
360/450 = .80
Then you find the gap between 1 which would correspond to 100 percent
.8 + x = 1
x = .2
there was a 20 percent decrease in sales
Y = 2.36x....where y is the distance traveled and x is the number of minutes
how far will the snail travel in 6 minutes...so sub in 6 for x
y = 2.36(6)
y = 14.16 ft <==