Zach agreed to shovel three of his neighbor's driveways for $7.50 per driveway. If he does this work every day for 7 days, how much more money will he need to earn a total of $300 to buy a new bike?

The more money needed to purchase a bike = $ 142.5

Step-by-step explanation:

Money earned for each driveway = $ 7.5

Money earned in three driveways = 7.5 × 3 = $ 22.5

Money earned in 7 days = 22.5 × 7 = $ 157.5

The price of new bike = $ 300

More money needed to purchase a bike = $ 300 -  $ 157.5

More money needed to purchase a bike = $ 142.5

Therefore the more money needed to purchase a bike = $ 142.5

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq