Find a ⋅ b.

a = 9i + 5j, b = 4i + 3j

Aline has a slope of and a y-intercept of –2. what is the x-intercept of the line?

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums. what is the probability that the applicant who gets the job plays drums or guitar?