A family has a bike rack that fits seven bikes, but they only have 5 bikes. How many ways can they fit these bikes on the rack

Step-by-step explanation:

From the question we are told that:

Bike space

Number of Bike

Generally the equation for This combination is mathematically given by

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x

he earned 78.75 in interest.

step-by-step explanation: