If the solution to the equation is x = 3 find the value of a

ax-3x=4 (x-3a)

Shane bought lunch for $5.38 and a shirt for $15.95. He then used the rest of his money to buy a book. He spent a total of $38.12. How much money did Shane spend on the book?

What is 20% of 80?

the high school band was selling ride tickets for the fair. On the first day, 200 child tickets and 100 adult tickets were sold for a total of $400. On the second day, 40 child tickets and 10 adult tickets were sold for a total of $60.

At an amusement park john wants to ride a rollercoaster that costs 19 tickets, a bumper car that costs 3 tickets, and a merry-go-round that costs 33 tickets. John had 31 tickets but lost 10 of them on a ride. How many more tickets does he need?

What is the length of the diagonal of a rectangle whose width is 100 centimeters and whose length is 180 centimeters. (round the answer to the nearest whole centimeter) A 202 B. 206 C 209 D 212

Can two data sets have the same mean but different standard deviations?

Ethel Meyer sells wheelchairs. She earns 11 percent commission on the first $5,000 and 14 percent on all sales over $5000. How much commission will she earn on $14,000 in sales?

An ice cream store sells 2drinks, in 5 sizes, and 5 flavors. In how many ways can a customer order a drink?

Kristen goes on a cave tour with her family. They climb down to 8 meters below ground level. Then they climb the opposite of - 8 meters to return to ground level. How many meters did they climb in all? Enter your answer in the box.

What percentage of a dollar is the value of each coin combination? a. 4 dimes b. 1 nickel and 3 pennies c. 5 quarters and 1 dime