A ruler costs pence. A pen costs 10 pence more than the ruler. Write an expression, in terms of , for the total cost of 3 pens and 2 rulers.

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

In a 45-45-90 right triangle, what is the ratio of the length of one leg to the length of the other leg? а . 1: 2 в. 2: 1 с. 2: 1 d. 1: 1

Urgent? will give brainliest to the first correct answer what is the area of the figure?