10
step-by-step explanation:
or
we need to solve for 'x' the following equation:
we have that:
⇒
⇒ ⇒
factorizing, we get that:
then, the solutions are: or
nothing extraneous has been found!
y= 2x+7
changed to y= 5x +7
as slope is increased from 2 to 5
therefore it would be less steeper
so, option d) is correct
answer: 0.26
i used the calculator on google