15+b=23 I need to show my work.

Alex drove 135 miles in 3 hours at a constant speed

Note: Your teacher will grade your response to ensure that you receive proper credit for your answer. The cost of a telephone call is $0.75 + $0.25 times the number of minutes.

Two sides of a triangle are 9 cm and 12 cm long. What is the range of possible lengths for the third side? Enter your answer in the boxes below.

Cameron can paint a door in 6 hours, and Ella can do the same job in 3 hours. Working together, how many hours will it take them to paint a door? 1/6+1/3=1/x

Write a unit rate for the situation. round to the nearest hundredth if necessary traveling 216 miles in 5 hours

Find the amount to which $500 will grow in five years following 12% compound annually

A restaurant offers a lunch special for $5.99 that includes 1 sandwich, 1 side dish, and 1 drink. Menu Sandwiches: grilled cheese, turkey, chicken salad, roast beef Sides: potato salad, garden salad, pasta salad Drinks: juice, water, iced tea Use

A large soup pot holds 20 quarts. What could be its volume in liters?

Perform the indicated operation and write the results in the form a+bi 4i (-i+3) - 3 (6-2t)

While on a train trip, Marsha noticed that there were 35 people in her train car. After the next stop, there were only 21 people in her car. If p represents the percent decrease in the number of people in Marsha's train car, what is p?