James is 19 years old he is three years older than twice his sister meredith's age write an equation that can be used to find meredith's age

John bought 2 horses at rs 20000 each

Evaluate 5 + 6 · 2 – 8 ÷ 4 + 7 using the correct order of operations. a. 22 b. 11 c. 27 d. 5

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =