There are 143 guest coming to a wedding. there are 15 tables in the reception hall. if the tables have approximately the same number of guests, what is the minimum number of guest at each table?

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

Find the length of the following tangent segments to the circles centered at o and o' whose radii are 5 and 3 respectively and the distance between o and o' is 12. what is the tangent segment of cd?

Emily is entering a bicycle race for charity. her mother pledges $0.90 for every 0.75 mile she bikes. if emily bikes 18 miles, how much will her mother donate?