Answer:
1. 8/$12=21/$x then cross multiply.
2. 1/$1.5, we're looking for cost so $1 is more reasonable
3. $31.5
Step-by-step explanation:
12x 21/ 8 = 31.5
Answer:
3x+4y=20
Step-by-step explanation:
The slope-intercept equation would be:
y=mx+b
y=-3/4(x)+5
But standard form is
ax+by=c
We can obtain this by moving the -3/4(x) to the left side

Multiply both sides by 4 to get rid of the fraction
3x+4y=20
Answer:
22/3
Step-by-step explanation:
Answer:
10x-14
Step-by-step explanation:
Answer:
x=10, y=-10
Step-by-step explanation: