How to do rational and irrational numbers

How do you convert 3 9/10 into a decimal

At lunch, Kira eats either a burrito containing 490 milligrams of sodium or a peanut butter sandwich containing 700 milligrams of sodium. Her doctor told her to reduce her sodium to no more than 4,000 milligrams per week.

Jenna earns $8.75 per hour working at the mall. If Jenna worked hours last week, how much did she earn before taxes were taken out?

Used paperback books are$0.25, and hardback books are $0.50. if you buy 3 paperback books and 5 hardback books how much money do you spend?

How many real solutions does the equation 0.2x^5-2x^3+1.8x+k=0 have when k=1?

5. Name three sets of supplementary angles. and and and

What is 4/5 times the quantity 1/4 c times 5

Determine the center and radius of the following circle equation: x2 + y2 + 4x + 2y - 76 = 0

In 45 years, Gabriel will be 4 times as old as she is right now

Write the equation of a circle with center (-2,3) and a radius of 4. Show all work to receive credit.