Where do I put the brackets in order to solve

-3.8+9.1*-2.5-0.5=-31.1

Bawi has three times as many marbles as Leonard. Bawi and Leonard have a combined total of 492 marbles. How many game marbles does Bawi have?

A company manufactures mountain bikes and racing bikes. It can build a maximum of 450 bikes per week. Every week it delivers 120 racing bikes and 130 mountain bikes to shops around the city, and it sells the remaining bikes to individual customers.

Inboard is 4 feet and 8 inches long how long is the board in feet

a class of 25 students shares a class set of 100 markers. on a day with 5 students absent, which statement is true

What is the answer to - 8 = 2x

Simply: x^3 y^3 / x^3 y^2 (the arrows mean to the power of the number)

A costumer is buying 3dvds that cost $6.55 each, with an additional 8% sales tax. What is the total amount that the costumer pays, rounded up to the nearest cent

One of Edna's grandchildren, Toby, plans to spend 4 years in college. The university awards him a scholarship to cover his tuition, but he will need an additional $8,000 for other expenses over the four years.

Yvonne bought 10 yards of fabric to make bandanas for her basketball team each bandana requires 1/3 yard of fabric how many bandanas can she make?

What's the sum of - 4 and 14