WILL GIVE BRAINLIEST IF CORRECT!! A car gets 30 miles per gallon of gas and is driven 1000 miles per month. Gas costs 4 per gallon. How much will the car's owner save on gas expenses in one year by buying a new car that goes 50 miles for each gallon of gas?

Step-by-step explanation:

Saving = old cost - new cost

Saving = ($4 * 1000/30 per month for a year) - ($4 * 1000/50 per month for a year)

Saving = (4000/30 * 12) - (4000/50 * 12)

Saving = (1600) - (960)

Saving = $640 a year

b. an equilateral triangle inscribed in a circle

step-by-step explanation:

we are given the figure of two circles having a triangle inside.

now, we know that,

"when a figure is lying inside an another figure, then the outside figure is known as circumscribed figure and the figure lying inside is referred to as the inscribed figure".

as we see that, the circles are containing the triangle completely.

thus, the circles are the circumscribed figures and the triangle is the inscribed figure.

hence, we get, 'an equilateral triangle is inscribed in a circle'.