Write using algebra.

If Jim is x years old now, and his sister is twice as old, how old was his sister 7 years ago?

How many comparisons are needed for a binary search in a set of 64 elements?

Change the percent to a decimal 138.4%

Lindsay ordered twice as many blankets as she did quilts for the department store where she works. The order was for 129 items. How many blankets and how many quilts did Lindsay order?

Mrs. Rodriguez bought 3 tickets for a concert. She also paid for a poster at the concert. Mrs. Rodriguez paid a total of $102 for the tickets and the poster. The equation 3t + p = 102 can be used to find p, the amount Mrs.

How to round 276,431 to the nearest hundred thousand

Slingerland borrowed $8,000 on july 20, at 11% interest. if the loan was due on october 17, what was the amount of interest on the loan using the exact interest method?

One year the price of wheat was $8.87 the next year the price was $9.60 route is the price per bushel of wheat for each year to the nearest tenth of a dollar

F (x) = 71 (0.93) ^2x growth or decay

A lawn is in the shape of a right triangle with a perimeter of 215 feet. The lengths of the sides of the triangle are each multiplied by 7. What is the perimeter of the new triangle? A. 1505 ft. B. 6100 ft. C. 7120 ft. D. 8640 ft.

Given w (x) = 3x+8, find w (2b+6)