Answer:
£70
Step-by-step explanation:
y×0.8=56
56/0.8= 70
70×0.8=56
you're just reversing the discount :)
Answer:
x=1
Step-by-step explanation:
3x-7 =4 - 8x
3x+8x =4+7
11x= 11
x=1
Answer:
1. x = 8
2.
Step-by-step explanation:
1. Solve the rational equation

First, cross multiply:

Now, use distributive property:

Separate terms with x and without x into different sides of equation:

Simplify:

Divide by -4:

2. The rational function

This rational function is undefined for all values of x, for which the denominator is equal to 0. Find these values:

This means that the line
is a vertical asymptote for the rational function f(x).