A school plans to spend twice the amount it did last year on its winter dance, less the cost of the disco ball which was $150, since they have it from last year. A total of $1,500 is being spent this year. Fill in the blanks to write an equation that will determine the amount of last year’s budget, a .(2 points)

blank (a − blank) = blank
fill in the blank

Let's fill in the blanks as follows:

(a - 150) = 1500

Therefore, the equation is:

a - 150 = 1500

Stan took Lily to his friend’s restaurant on a date. The friend told the waiter to remove the $12 dessert from Stan’s bill. Stan tipped the waiter 20% on the reduced bill, which was a $15 tip. Fill in the blanks to write an equation that will determine the amount of the original bill, b .(2 points)

blank (b − blank) = blank
fill in the blanks

Let's fill in the blanks as follows:

(b - 12) = 15

Therefore, the equation is:

b - 12 = 15