Write inequalities to represent the situations below. The vehicle's fuel efficiency is no less than 45 miles per gallon.

Use f to represent the vehicle's fuel efficiency (in miles per gallon).

Martina exercises at least 45 minutes per day.

Use t to represent Martina's amount of exercise (in minutes per day).

Step-by-step explanation:

Solving (a): No less than 45

In inequalities, no less than means

So, the statement can be represented as:

Solving (b): At least 45

In inequalities, at least means

So, the statement can be represented as:

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm