If tom and abby specialize and then trade balls and rackets at 15 balls per 1
a. tom gains 10 balls while abby gains 1 racket and 15 balls an hour
b. tom gains 10 balls and abby gains 10 balls an hour
c. together they gain 80 balls and 4 rackets an hour
d. tom gains 2 rackets while abby gains 40 balls an hour
e. tom gains 1 racket and 15 balls while abby gains 10 balls an hour
  

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

After a dreary day of rain, the sun peeks through the clouds and a rainbow forms. you notice the rainbow is the shape of a parabola. the equation for this parabola is y = -x2 + 36. graph of a parabola opening down at the vertex 0 comma 36 crossing the x–axis at negative 6 comma 0 and 6 comma 0. in the distance, an airplane is taking off. as it ascends during take-off, it makes a slanted line that cuts through the rainbow at two points. create a table of at least four values for the function that includes two points of intersection between the airplane and the rainbow. analyze the two functions. answer the following reflection questions in complete sentences. what is the domain and range of the rainbow? explain what the domain and range represent. do all of the values make sense in this situation? why or why not? what are the x- and y-intercepts of the rainbow? explain what each intercept represents. is the linear function you created with your table positive or negative? explain. what are the solutions or solution to the system of equations created? explain what it or they represent. create your own piecewise function with at least two functions. explain, using complete sentences, the steps for graphing the function. graph the function by hand or using a graphing software of your choice (remember to submit the graph).

Find the area of the trapezoid a. 150 ft^2 b. 300 ft^2 c. 45 ft^2 d. 75 ft^2