A shirt is on sale for 80% of the original price of $50. What is the sale price? I'm taking a test rn pls help

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Question 3 (essay worth 10 points) (03.06 mc) part a: max rented a motorbike at $465 for 5 days. if he rents the same motorbike for a week, he has to pay a total rent of $625. write an equation in the standard form to represent the total rent (y) that max has to pay for renting the motorbike for x days. (4 points) part b: write the equation obtained in part a using function notation. (2 points) part c: describe the steps to graph the equation obtained above on the coordinate axes. mention the labels on the axes and the intervals. (4 points)

Which is the focus of a parabola with equation y2=4x