If marcus used to get paid $45 a day and now got a raise to $63 a day what percent increase to his new salary

The weight of an object in a particular scale is 175.2 lbs. the measured weight may vary from the actual weight by at most 0.1 lbs. what is the range of actual weights of the object

The trigonometric ratios sine and secant are reciprocals of each other

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41