Paint costs $3.99 per can and brushes cost $2.50 each. the sales tax rate is 5%. which expression represents the total cost of p cans of paint and b paint brushes? a. 3.99p + 2.50b b. 0.05(3.99p + 2.50b) c. 1.05(3.99p + 2.50b) d. –1.05(3.99p + 2.50b)

C. 1.05(3.99p + 2.50b)

Step-by-step explanation:

Hi, to answer this question we have to write an inequality with the information given:

Paint can cost : 3.99

Brush cost : 2.50

Sale tax rate : 5% : 0.05 (decimal form, 5/100= 0.05)

So, to calculate the total cost, first, we have to multiply each cost by the quantity of each item.

3.99 p + 2.50 b

Where p is the number of paint cans and b is the number of brushes

Since we have to add the tax rate we have to multiply that expression by (1 +0.05) , the percent increase.

. 1.05(3.99p + 2.50b) (option C)

Feel free to ask for more if needed or if you did not understand something.

1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours

1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.