Population size can be estimated using the formula
a. (cbr + immigration) + (cdr + emmigration)
b. (cbr + immigration) - (cdr-emmigration)
c. (cbr + immigration) + (cdr - emmigration)
d. (cbr - immigration) + (cdr + emmigration)
e. (cbr + immigration) - (cdr + emmigration)

Who pays into social security a employees b self employed c employers d all of the above

You find a mysterious, dull substance on the ground and pick it up for a closer look. it is powdery, very light, and soft to the touch. the substance is most likely i. an organic mineral ii. a metallic mineral iii. a nonmetallic mineral i only ii only iii only i and ii i and iii

Mrs. foyle told yolanda that her test had 38 problems worth a total of 100 points. each test problem is worth either 5 points or 2 points. yolanda wanted to determine how many 2-point and how many 5-point questions are on the test. in the space below, determine how many questions of each point-value are on the test. show your work or provide an explanation to support your answer. need this asap