How can I do scientific notation

Jack rented a bike from Alberto's Bikes. It cost $13 plus $3 per hour. If Jack paid $22, then he rented the bike for how many hours?

Given B = {a, l, g, e, b, r} and C = {m, y, t, h}, find B ∪ C

The Gulf of Mexico has an average depth of 4,874 ft. This is about 36.2% of the average depth of the Pacific Ocean. What is the average depth of the Pacific Ocean? Round to the nearest foot.

How many 4s are in 36?

What is the y-intercept of the equation 2x+3y=6?

How many headbands can the students make if one headband takes 7 beads, 9 inches of ribbon, and 3 buttons ... and the total amount of material you have is 6,437 beads, 3,636 buttons, and 3,870 inches of ribbon?

An object has a mass of 18 grams and its volume is 2 cm3 calculate density

In the diagram, a building casts a 20-ft shadow and a flagpole casts a 7-ft shadow. If the flagpole is 12 ft tall, how high is the building? Round to the nearest tenth ...

Akar akar persaman 3x^2+x-4=0 adalah

What product is less than 19*12