Answer:
3rd Option
Step-by-step explanation:
Which equation is the inverse of y = 7x2 – 10?
y = StartFraction plus-or-minus StartRoot x + 10 EndRoot Over 7 EndFraction
y = plus-or-minus StartRoot StartFraction x + 10 Over 7 EndFraction EndRoot
x = plus-or-minus StartRoot StartFraction x Over 7 EndFraction + 10 EndRoot
y = StartFraction plus-or-minus StartRoot x EndRoot Over 7 EndFraction plus-or-minus StartFraction StartRoot 10 EndRoot Over 7 EndFraction
X + y = 12
x - y = 4
(12 - 4) : 2 = 4
4 + 4 = 8
x = 8
y = 4
-----------------------
8 + 4 = 12
8 - 4 = 4
Answer:
Jeans-$19.95
Step-by-step explanation:
The expression for each individual's purchase can be expressed as:
We make j the subject in equation i then substitute in ii:
Hence, it costs $19.95 per pair of jeans and $12.50 per shirt pair.
